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dc.contributor.advisorYarin, Alexander L.en_US
dc.contributor.authorSinha Ray, Sumanen_US
dc.date.accessioned2012-12-14T16:22:22Z
dc.date.available2012-12-14T16:22:22Z
dc.date.created2011-08en_US
dc.date.issued2012-12-14
dc.date.submitted2011-08en_US
dc.identifier.urihttp://hdl.handle.net/10027/9610
dc.description.abstractThe first chapter of this work deals with bundles of microscopically long carbon nanochannels, which were assembled as a nanofluidic device to study bi-layer flows of n-decane and air. These experiments were accompanied and supported by theoretical considerations. The study paradoxically showed that it is possible to deliver more liquid through the nanochannels if they are partially filled with liquid in comparison to those which are completely filled with liquid. In the following chapter these nanochannels were used to produce thermoresponsive nanoparticles (~400 nm in diameter) at a very high production rate of 107 particles/sec. These nanoparticles were loaded with a low molecular weight dye to study the thermoresponsive release profile experimentally. The experiments were accompanied and guided by theoretical work. In the third part of the work, a rigorous electron microscopy revealed the 2-nm islands of thermoresponsive hydrogels nanofibers produced by electrospinning and cross-linking of electropun PNIPAM-containing nanofibers. These islands were found to be responsible for positive thermosensitivity in dye release experiments. In the following chapters meltblowing was studied both experimentally and theoretically. The role of air turbulence in this process was elucidated experimentally by blowing a solid flexible threadline in high-speed gas flow. Using this information, theoretical understanding of polymer jet/gas jet turbulent interactions was achieved and a theory of small (linearized)and large (nonlinear) bending perturbations of polymer jets was developed. This theory was extended to simulate numerically multiple polymer jets being deposited on a screen moving normally to the blowing direction. In the subsequent chapter, a novel method, solution blowing, for producing monolithic and core-shell nanofibers was developed. The core-shell fibers were also converted into hollow carbon nanotubes. The carbon nanofiber mats produced by this method were used as an electrode in a microbial fuel cell, which showed a higher current density in comparison to standard polycrystalline graphite rods. In addition, solution blowing was used to form soy-protein-containing biodegradable nanofibers. In the next chapter, a novel method of intercalating wax and butter en masse into carbon nanotubes was demonstrated. It was shown that by manipulating the intercalated solute the working temperature range of phase-change materials (PCM) can be significantly widened, while the response time reduced to minimum. In the final part of the work the elongational rheology of gypsum slurries was also studied and corroborated using the data from the corresponding shear rheological studies. It was shown that the gypsum slurries approximately follow the tensorial Ostwald-de-Waele (power law) constitutive equation.en_US
dc.language.isoenen_US
dc.rightsen_US
dc.rightsCopyright 2011 Suman Sinha Rayen_US
dc.subjectNanochannelsen_US
dc.subjectNanoparticlesen_US
dc.subjectNanofibersen_US
dc.subjectPhase Change Materialsen_US
dc.subjectSpray Coolingen_US
dc.subjectGypsum Slurries.en_US
dc.titleMechanics of Micro- and Nano-Textured Systems: Nanofibers, Nanochannels, Nanoparticles and Slurriesen_US
thesis.degree.departmentMechanical and Industrial Engineeringen_US
thesis.degree.disciplineMechanical Engineeringen_US
thesis.degree.grantorUniversity of Illinois at Chicagoen_US
thesis.degree.levelDoctoralen_US
thesis.degree.namePhD, Doctor of Philosophyen_US
dc.type.genrethesisen_US
dc.contributor.committeeMemberMegaridis, Constantine M.en_US
dc.contributor.committeeMemberMashayek, Farzaden_US
dc.contributor.committeeMemberNicholls, Alan W.en_US
dc.contributor.committeeMemberBrezinsky, Kennethen_US
dc.type.materialtexten_US


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